Justice Sotomayor, joined by Justice Ginsburg, argued that the Establishment Clause requires governmental religious neutrality and that a reasonable observer would conclude that the Proclamation was motivated by anti-Muslim animus. In her view, this constitutional question was clearer than the statutory questions and independently required an injunction.
She chronicled the President’s campaign and post-inauguration statements calling for a “total and complete shutdown of Muslims,” asserting that Islam “hates us,” describing later orders as a legally revised version of the promised Muslim ban, and continuing to make anti-Muslim statements after issuing the Proclamation. The President’s failure to disavow those statements, she reasoned, reinforced their significance.
The majority improperly used deferential rational-basis review to avoid meaningful Establishment Clause scrutiny. Mandel and Din involved individual visa decisions under specific statutory grounds, not a sweeping executive policy allegedly enacted to disfavor a religion. Even under rational-basis review, she concluded, the record showed that the Proclamation was too disconnected from its claimed national-security justification to be explained by anything other than animus.
The Proclamation overwhelmingly targeted Muslim-majority nations, while North Korea and Venezuela were only minimally affected. Its reliance on an undisclosed multi-agency review could not erase the policy’s discriminatory origins, and Congress’s detailed immigration, screening, and Visa Waiver frameworks already addressed the Government’s stated vetting concerns.
Justice Sotomayor also challenged the waiver program as potentially a sham, citing sparse waiver approvals and evidence of arbitrary administration. The resulting harms—family separation, disruption to universities and religious communities, and broader injuries to national security, medicine, culture, and the economy—supported preliminary injunctive relief.
Finally, she viewed the majority’s reasoning as dangerously reminiscent of Korematsu: both accepted an asserted national-security rationale for a sweeping exclusionary policy despite strong evidence of prejudice. Although the Court formally repudiated Korematsu, she argued that its decision repeated the same error by accepting a discriminatory policy under the cover of national security.